/* =============================================================
 * Your Grandmother's guide to Algorithms
 * =============================================================
 *
 * Copyright (c) 2007, Saverio Miroddi
 *
 * All rights reserved.
 *
 * Redistribution and use in source and binary forms, with or without 
 * modification, are permitted provided that the following conditions are met:
 * 
 *     * Redistributions of source code must retain the above copyright notice,
 *       this list of conditions and the following disclaimer.
 *     * Redistributions in binary form must reproduce the above copyright 
 *       notice, this list of conditions and the following disclaimer in the 
 *       documentation and/or other materials provided with the distribution.
 *     * Neither the name of the SaverioMiroddiSoftware nor the names of its 
 *       contributors may be used to endorse or promote products derived from 
 *       this software without specific prior written permission.
 * 
 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
 * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER 
 * OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
 * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
 * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
 * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
 * LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
 * NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
 * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 *  
 * ---------------------------
 * GuiExprNode.java
 * ---------------------------
 *
 */
package treegui.nodewrappers;

import java.awt.Color;
import java.awt.Point;
import java.util.ArrayList;
import java.util.List;

import redblack.RBNode;

/**
 * Wrapper for displaying an RedBlack node with TreeFrame.
 * 
 * @author Saverio Miroddi
 */
@SuppressWarnings("unchecked")
public class GuiRBNode implements IGuiNode {
	private final RBNode node;
	private Point position;

	public GuiRBNode(RBNode node) {
		this.node = node;
	}
	
	@Override
	public String toString() {
		return node.toString();
	}
	
	@Override
	public List<IGuiNode> getChildren() {
		List<IGuiNode> children = new ArrayList<IGuiNode>();
		
		if (node.left != null)  children.add(new GuiRBNode(node.left));
		if (node.right != null) children.add(new GuiRBNode(node.right));
		
		return children;
	}

	@Override
	public Point getPosition() {
		return position;
	}

	@Override
	public void setPosition(Point position) {
		this.position = position;
	}

	@Override
	public Color getColor() {
		if (node.color == RBNode.BLACK) return Color.BLACK;
		else return Color.RED;
	}

	@Override
	public List<EdgeCoordinate> getEdgeCoordinates() {
		List<EdgeCoordinate> edges = new ArrayList<EdgeCoordinate>();
		
		if (node.left != null)  edges.add(new EdgeCoordinate(this, new GuiRBNode(node.left)));
		if (node.right != null) edges.add(new EdgeCoordinate(this, new GuiRBNode(node.right)));
		
		return edges;
	}

	@Override
	public boolean equals(Object other)
	{
		Object thisValue = node.value;
		Object otherValue = ((GuiRBNode)other).node.value;
		
		if (thisValue == null) return otherValue == null;
		else return thisValue.equals(otherValue);
	}
}